A) \[45\]
B) \[54\]
C) \[36\]
D) None of these
Correct Answer: B
Solution :
[b] If the two digits are x and y, then the number is \[10x+y\]. |
Now, \[\frac{5}{6}(10x+y)=10y+x\] |
Solving, we get \[44x+55y\] |
\[\frac{x}{y}=\frac{5}{4}\] |
Also \[x-y=1\] Solving them. we get \[x=5\] and \[y=4\]. |
Therefore, number is 54. |
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